3PM UPDATE: The Horseheads Fire Department released an update on Monday morning's fire, saying crews were called to the scene at about 5:45AM for a fire at the apartment home at 210 E. Franklin Street. 

When crews arrived, heavy flames were seen on the second floor, and two occupants were still inside. The people were rescued, and taken by ambulance to a local trauma center.

Fire officials say flames were able to spread through the roof of the apartment building, due to several additions that were added on to the original structure, built in the 1800's.

An investigation into the cause of the fire is still underway. 

HORSEHEADS, N.Y. (WENY) -- An early morning fire ignited at a building in Horseheads Monday. The blaze happened at 210 East Franklin Street. 

Calls came in for the fire during the 6 a.m. hour Monday. The Horseheads Fire Department, Town and Country Fire Department, Elmira Heights Fire Department and Millport responded to the scene. Horseheads Police were also there.

East Franklin Street was blocked off from the Old Ithaca Rd. roundabout towards the village while crews were on scene. 

Crews say more information will be released about the blaze later Monday.

This is a developing news story. WENY News will update the article when more information becomes available.